64231155 has 12 divisors (see below), whose sum is σ = 111334080. Its totient is φ = 34256592.

The previous prime is 64231129. The next prime is 64231159. The reversal of 64231155 is 55113246.

64231155 is a `hidden beast` number, since 642 + 3 + 1 + 15 + 5 = 666.

It is not a de Polignac number, because 64231155 - 2⁹ = 64230643 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64231159) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 713635 + ... + 713724.

It is an arithmetic number, because the mean of its divisors is an integer number (9277840).

Almost surely, 2^64231155 is an apocalyptic number.

64231155 is a deficient number, since it is larger than the sum of its proper divisors (47102925).

64231155 is a wasteful number, since it uses less digits than its factorization.

64231155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1427370 (or 1427367 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 64231155 is about 8014.4341659284. The cubic root of 64231155 is about 400.4809942960.

The spelling of 64231155 in words is "sixty-four million, two hundred thirty-one thousand, one hundred fifty-five".